Finding the Fourth Proportional to 420,614.87, 580,481.64 and 239,334.44
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Solution
The fourth proportional to 420,614.87, 580,481.64 and 239,334.44 is: 330,300.37
Step by Step Solution
- Step 1: Write the proportion equation
420,614.87 : 580,481.64 = 239,334.44 : x - Step 2: Convert to fraction form
420,614.87/580,481.64 = 239,334.44/x - Step 3: Cross multiply
420,614.87x = 580,481.64 × 239,334.44 - Step 4: Simplify right side
420,614.87x = 138,929,248,239.68 - Step 5: Solve for x
x = 138,929,248,239.68/420,614.87 - Step 6: Final answer
x = 330,300.37
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.